Basic requestIdleCallback Tests


PASS window.requestIdleCallback is defined 
PASS window.cancelIdleCallback is defined 
PASS window.requestIdleCallback() returns a number 
PASS window.cancelIdleCallback() returns undefined 
FAIL requestIdleCallback schedules callbacks assert_true: IdleDeadline.timeRemaining() MUST be less than or equal to 50ms in the future. expected true got false
PASS cancelIdleCallback cancels callbacks